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Finding the Fourth Proportional to 145,402.70, 218,104.04 and 40,218.93

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Solution

The fourth proportional to 145,402.70, 218,104.04 and 40,218.93 is: 60,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,402.70 : 218,104.04 = 40,218.93 : x
  2. Step 2: Convert to fraction form
    145,402.70/218,104.04 = 40,218.93/x
  3. Step 3: Cross multiply
    145,402.70x = 218,104.04 × 40,218.93
  4. Step 4: Simplify right side
    145,402.70x = 8,771,911,218.02
  5. Step 5: Solve for x
    x = 8,771,911,218.02/145,402.70
  6. Step 6: Final answer
    x = 60,328.40

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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.