Home / 658,152,141.40-987,228,212.10-221,307,639.40

Finding the Fourth Proportional to 658,152,141.40, 987,228,212.10 and 221,307,639.40

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Solution

The fourth proportional to 658,152,141.40, 987,228,212.10 and 221,307,639.40 is: 331,961,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,152,141.40 : 987,228,212.10 = 221,307,639.40 : x
  2. Step 2: Convert to fraction form
    658,152,141.40/987,228,212.10 = 221,307,639.40/x
  3. Step 3: Cross multiply
    658,152,141.40x = 987,228,212.10 × 221,307,639.40
  4. Step 4: Simplify right side
    658,152,141.40x = 218,481,145,168,933,536
  5. Step 5: Solve for x
    x = 218,481,145,168,933,536/658,152,141.40
  6. Step 6: Final answer
    x = 331,961,459.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.