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Finding the Fourth Proportional to 560,008.32, 840,010.89 and 139,284.20

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Solution

The fourth proportional to 560,008.32, 840,010.89 and 139,284.20 is: 208,925.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,008.32 : 840,010.89 = 139,284.20 : x
  2. Step 2: Convert to fraction form
    560,008.32/840,010.89 = 139,284.20/x
  3. Step 3: Cross multiply
    560,008.32x = 840,010.89 × 139,284.20
  4. Step 4: Simplify right side
    560,008.32x = 117,000,244,804.94
  5. Step 5: Solve for x
    x = 117,000,244,804.94/560,008.32
  6. Step 6: Final answer
    x = 208,925.90

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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.