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Finding the Fourth Proportional to 348,068.80, 521,714.40 and 148,355.20

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Solution

The fourth proportional to 348,068.80, 521,714.40 and 148,355.20 is: 222,367.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,068.80 : 521,714.40 = 148,355.20 : x
  2. Step 2: Convert to fraction form
    348,068.80/521,714.40 = 148,355.20/x
  3. Step 3: Cross multiply
    348,068.80x = 521,714.40 × 148,355.20
  4. Step 4: Simplify right side
    348,068.80x = 77,399,044,154.88
  5. Step 5: Solve for x
    x = 77,399,044,154.88/348,068.80
  6. Step 6: Final answer
    x = 222,367.08

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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.