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Finding the Fourth Proportional to 145,397.68, 218,007.20 and 56,547.62

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Solution

The fourth proportional to 145,397.68, 218,007.20 and 56,547.62 is: 84,786.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,397.68 : 218,007.20 = 56,547.62 : x
  2. Step 2: Convert to fraction form
    145,397.68/218,007.20 = 56,547.62/x
  3. Step 3: Cross multiply
    145,397.68x = 218,007.20 × 56,547.62
  4. Step 4: Simplify right side
    145,397.68x = 12,327,788,302.86
  5. Step 5: Solve for x
    x = 12,327,788,302.86/145,397.68
  6. Step 6: Final answer
    x = 84,786.69

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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.