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Finding the Fourth Proportional to 356,043.70, 534,065.55 and 343,602.10

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Solution

The fourth proportional to 356,043.70, 534,065.55 and 343,602.10 is: 515,403.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,043.70 : 534,065.55 = 343,602.10 : x
  2. Step 2: Convert to fraction form
    356,043.70/534,065.55 = 343,602.10/x
  3. Step 3: Cross multiply
    356,043.70x = 534,065.55 × 343,602.10
  4. Step 4: Simplify right side
    356,043.70x = 183,506,044,517.66
  5. Step 5: Solve for x
    x = 183,506,044,517.66/356,043.70
  6. Step 6: Final answer
    x = 515,403.15

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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.