Home / 287,725,615.75-431,402,861.50-112,866,317.83

Finding the Fourth Proportional to 287,725,615.75, 431,402,861.50 and 112,866,317.83

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Solution

The fourth proportional to 287,725,615.75, 431,402,861.50 and 112,866,317.83 is: 169,226,686.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,725,615.75 : 431,402,861.50 = 112,866,317.83 : x
  2. Step 2: Convert to fraction form
    287,725,615.75/431,402,861.50 = 112,866,317.83/x
  3. Step 3: Cross multiply
    287,725,615.75x = 431,402,861.50 × 112,866,317.83
  4. Step 4: Simplify right side
    287,725,615.75x = 48,690,852,479,721,864
  5. Step 5: Solve for x
    x = 48,690,852,479,721,864/287,725,615.75
  6. Step 6: Final answer
    x = 169,226,686.17

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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.