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Finding the Fourth Proportional to 145,411.90, 218,130.27 and 40,230.70

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Solution

The fourth proportional to 145,411.90, 218,130.27 and 40,230.70 is: 60,349.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,411.90 : 218,130.27 = 40,230.70 : x
  2. Step 2: Convert to fraction form
    145,411.90/218,130.27 = 40,230.70/x
  3. Step 3: Cross multiply
    145,411.90x = 218,130.27 × 40,230.70
  4. Step 4: Simplify right side
    145,411.90x = 8,775,533,453.29
  5. Step 5: Solve for x
    x = 8,775,533,453.29/145,411.90
  6. Step 6: Final answer
    x = 60,349.49

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1.5x scale

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.