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Finding the Fourth Proportional to 437,618.70, 656,428.05 and 260,034.30

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Solution

The fourth proportional to 437,618.70, 656,428.05 and 260,034.30 is: 390,051.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,618.70 : 656,428.05 = 260,034.30 : x
  2. Step 2: Convert to fraction form
    437,618.70/656,428.05 = 260,034.30/x
  3. Step 3: Cross multiply
    437,618.70x = 656,428.05 × 260,034.30
  4. Step 4: Simplify right side
    437,618.70x = 170,693,808,482.12
  5. Step 5: Solve for x
    x = 170,693,808,482.12/437,618.70
  6. Step 6: Final answer
    x = 390,051.45

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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.