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Finding the Fourth Proportional to 334,990.40, 502,203.12 and 145,308.02

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Solution

The fourth proportional to 334,990.40, 502,203.12 and 145,308.02 is: 217,839.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,990.40 : 502,203.12 = 145,308.02 : x
  2. Step 2: Convert to fraction form
    334,990.40/502,203.12 = 145,308.02/x
  3. Step 3: Cross multiply
    334,990.40x = 502,203.12 × 145,308.02
  4. Step 4: Simplify right side
    334,990.40x = 72,974,141,005.02
  5. Step 5: Solve for x
    x = 72,974,141,005.02/334,990.40
  6. Step 6: Final answer
    x = 217,839.50

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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.