Home / 287,587.16-431,383.50-77,225.12

Finding the Fourth Proportional to 287,587.16, 431,383.50 and 77,225.12

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Solution

The fourth proportional to 287,587.16, 431,383.50 and 77,225.12 is: 115,838.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,587.16 : 431,383.50 = 77,225.12 : x
  2. Step 2: Convert to fraction form
    287,587.16/431,383.50 = 77,225.12/x
  3. Step 3: Cross multiply
    287,587.16x = 431,383.50 × 77,225.12
  4. Step 4: Simplify right side
    287,587.16x = 33,313,642,553.52
  5. Step 5: Solve for x
    x = 33,313,642,553.52/287,587.16
  6. Step 6: Final answer
    x = 115,838.42

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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.