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Finding the Fourth Proportional to 527,658.66, 791,477.01 and 128,301.51

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Solution

The fourth proportional to 527,658.66, 791,477.01 and 128,301.51 is: 192,449.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,658.66 : 791,477.01 = 128,301.51 : x
  2. Step 2: Convert to fraction form
    527,658.66/791,477.01 = 128,301.51/x
  3. Step 3: Cross multiply
    527,658.66x = 791,477.01 × 128,301.51
  4. Step 4: Simplify right side
    527,658.66x = 101,547,695,513.29
  5. Step 5: Solve for x
    x = 101,547,695,513.29/527,658.66
  6. Step 6: Final answer
    x = 192,449.60

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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.