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Finding the Fourth Proportional to 145,398.68, 218,008.70 and 56,548.62

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Solution

The fourth proportional to 145,398.68, 218,008.70 and 56,548.62 is: 84,788.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,398.68 : 218,008.70 = 56,548.62 : x
  2. Step 2: Convert to fraction form
    145,398.68/218,008.70 = 56,548.62/x
  3. Step 3: Cross multiply
    145,398.68x = 218,008.70 × 56,548.62
  4. Step 4: Simplify right side
    145,398.68x = 12,328,091,132.99
  5. Step 5: Solve for x
    x = 12,328,091,132.99/145,398.68
  6. Step 6: Final answer
    x = 84,788.19

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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.