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Finding the Fourth Proportional to 425,790.04, 638,685.02 and 238,816.12

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Solution

The fourth proportional to 425,790.04, 638,685.02 and 238,816.12 is: 358,224.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,790.04 : 638,685.02 = 238,816.12 : x
  2. Step 2: Convert to fraction form
    425,790.04/638,685.02 = 238,816.12/x
  3. Step 3: Cross multiply
    425,790.04x = 638,685.02 × 238,816.12
  4. Step 4: Simplify right side
    425,790.04x = 152,528,278,378.52
  5. Step 5: Solve for x
    x = 152,528,278,378.52/425,790.04
  6. Step 6: Final answer
    x = 358,224.16

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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.