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Finding the Fourth Proportional to 289,816.61, 434,641.84 and 97,670.12

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Solution

The fourth proportional to 289,816.61, 434,641.84 and 97,670.12 is: 146,477.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,816.61 : 434,641.84 = 97,670.12 : x
  2. Step 2: Convert to fraction form
    289,816.61/434,641.84 = 97,670.12/x
  3. Step 3: Cross multiply
    289,816.61x = 434,641.84 × 97,670.12
  4. Step 4: Simplify right side
    289,816.61x = 42,451,520,248.61
  5. Step 5: Solve for x
    x = 42,451,520,248.61/289,816.61
  6. Step 6: Final answer
    x = 146,477.18

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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.