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Finding the Fourth Proportional to 348,061.80, 520,926.30 and 306,071.40

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Solution

The fourth proportional to 348,061.80, 520,926.30 and 306,071.40 is: 458,081.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,061.80 : 520,926.30 = 306,071.40 : x
  2. Step 2: Convert to fraction form
    348,061.80/520,926.30 = 306,071.40/x
  3. Step 3: Cross multiply
    348,061.80x = 520,926.30 × 306,071.40
  4. Step 4: Simplify right side
    348,061.80x = 159,440,641,937.82
  5. Step 5: Solve for x
    x = 159,440,641,937.82/348,061.80
  6. Step 6: Final answer
    x = 458,081.42

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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.