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Finding the Fourth Proportional to 401,068.80, 553,456.80 and 231,292.80

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Solution

The fourth proportional to 401,068.80, 553,456.80 and 231,292.80 is: 319,173.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,068.80 : 553,456.80 = 231,292.80 : x
  2. Step 2: Convert to fraction form
    401,068.80/553,456.80 = 231,292.80/x
  3. Step 3: Cross multiply
    401,068.80x = 553,456.80 × 231,292.80
  4. Step 4: Simplify right side
    401,068.80x = 128,010,572,951.04
  5. Step 5: Solve for x
    x = 128,010,572,951.04/401,068.80
  6. Step 6: Final answer
    x = 319,173.60

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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.