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Finding the Fourth Proportional to 478,038.66, 717,077.88 and 141,079.38

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Solution

The fourth proportional to 478,038.66, 717,077.88 and 141,079.38 is: 211,624.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,038.66 : 717,077.88 = 141,079.38 : x
  2. Step 2: Convert to fraction form
    478,038.66/717,077.88 = 141,079.38/x
  3. Step 3: Cross multiply
    478,038.66x = 717,077.88 × 141,079.38
  4. Step 4: Simplify right side
    478,038.66x = 101,164,902,722.11
  5. Step 5: Solve for x
    x = 101,164,902,722.11/478,038.66
  6. Step 6: Final answer
    x = 211,624.94

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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.