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Finding the Fourth Proportional to 400,726.76, 553,002.92 and 230,971.84

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Solution

The fourth proportional to 400,726.76, 553,002.92 and 230,971.84 is: 318,741.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,726.76 : 553,002.92 = 230,971.84 : x
  2. Step 2: Convert to fraction form
    400,726.76/553,002.92 = 230,971.84/x
  3. Step 3: Cross multiply
    400,726.76x = 553,002.92 × 230,971.84
  4. Step 4: Simplify right side
    400,726.76x = 127,728,101,957.77
  5. Step 5: Solve for x
    x = 127,728,101,957.77/400,726.76
  6. Step 6: Final answer
    x = 318,741.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.