Home / 309,791,392.08-464,843,852.28-128,168,915.28

Finding the Fourth Proportional to 309,791,392.08, 464,843,852.28 and 128,168,915.28

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Solution

The fourth proportional to 309,791,392.08, 464,843,852.28 and 128,168,915.28 is: 192,318,230.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,791,392.08 : 464,843,852.28 = 128,168,915.28 : x
  2. Step 2: Convert to fraction form
    309,791,392.08/464,843,852.28 = 128,168,915.28/x
  3. Step 3: Cross multiply
    309,791,392.08x = 464,843,852.28 × 128,168,915.28
  4. Step 4: Simplify right side
    309,791,392.08x = 59,578,532,321,304,152
  5. Step 5: Solve for x
    x = 59,578,532,321,304,152/309,791,392.08
  6. Step 6: Final answer
    x = 192,318,230.41

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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.