Home / 287,516.90-431,358.65-119,006.12

Finding the Fourth Proportional to 287,516.90, 431,358.65 and 119,006.12

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Solution

The fourth proportional to 287,516.90, 431,358.65 and 119,006.12 is: 178,543.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,516.90 : 431,358.65 = 119,006.12 : x
  2. Step 2: Convert to fraction form
    287,516.90/431,358.65 = 119,006.12/x
  3. Step 3: Cross multiply
    287,516.90x = 431,358.65 × 119,006.12
  4. Step 4: Simplify right side
    287,516.90x = 51,334,319,264.94
  5. Step 5: Solve for x
    x = 51,334,319,264.94/287,516.90
  6. Step 6: Final answer
    x = 178,543.66

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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.