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Finding the Fourth Proportional to 290,432.61, 400,726.31 and 169,505.01

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Solution

The fourth proportional to 290,432.61, 400,726.31 and 169,505.01 is: 233,875.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,432.61 : 400,726.31 = 169,505.01 : x
  2. Step 2: Convert to fraction form
    290,432.61/400,726.31 = 169,505.01/x
  3. Step 3: Cross multiply
    290,432.61x = 400,726.31 × 169,505.01
  4. Step 4: Simplify right side
    290,432.61x = 67,925,116,336.29
  5. Step 5: Solve for x
    x = 67,925,116,336.29/290,432.61
  6. Step 6: Final answer
    x = 233,875.65

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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.