Home / 287,133.40-430,485.18-198,132.76

Finding the Fourth Proportional to 287,133.40, 430,485.18 and 198,132.76

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Solution

The fourth proportional to 287,133.40, 430,485.18 and 198,132.76 is: 297,050.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,133.40 : 430,485.18 = 198,132.76 : x
  2. Step 2: Convert to fraction form
    287,133.40/430,485.18 = 198,132.76/x
  3. Step 3: Cross multiply
    287,133.40x = 430,485.18 × 198,132.76
  4. Step 4: Simplify right side
    287,133.40x = 85,293,216,852.50
  5. Step 5: Solve for x
    x = 85,293,216,852.50/287,133.40
  6. Step 6: Final answer
    x = 297,050.84

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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.