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Finding the Fourth Proportional to 478,482.40, 717,863.93 and 141,531.92

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Solution

The fourth proportional to 478,482.40, 717,863.93 and 141,531.92 is: 212,339.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,482.40 : 717,863.93 = 141,531.92 : x
  2. Step 2: Convert to fraction form
    478,482.40/717,863.93 = 141,531.92/x
  3. Step 3: Cross multiply
    478,482.40x = 717,863.93 × 141,531.92
  4. Step 4: Simplify right side
    478,482.40x = 101,600,657,076.16
  5. Step 5: Solve for x
    x = 101,600,657,076.16/478,482.40
  6. Step 6: Final answer
    x = 212,339.38

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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.