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Finding the Fourth Proportional to 478,089.59, 716,967.27 and 141,040.79

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Solution

The fourth proportional to 478,089.59, 716,967.27 and 141,040.79 is: 211,511.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,089.59 : 716,967.27 = 141,040.79 : x
  2. Step 2: Convert to fraction form
    478,089.59/716,967.27 = 141,040.79/x
  3. Step 3: Cross multiply
    478,089.59x = 716,967.27 × 141,040.79
  4. Step 4: Simplify right side
    478,089.59x = 101,121,631,957.36
  5. Step 5: Solve for x
    x = 101,121,631,957.36/478,089.59
  6. Step 6: Final answer
    x = 211,511.89

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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.