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Finding the Fourth Proportional to 387,515.67, 534,548.67 and 242,068.61

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Solution

The fourth proportional to 387,515.67, 534,548.67 and 242,068.61 is: 333,915.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,515.67 : 534,548.67 = 242,068.61 : x
  2. Step 2: Convert to fraction form
    387,515.67/534,548.67 = 242,068.61/x
  3. Step 3: Cross multiply
    387,515.67x = 534,548.67 × 242,068.61
  4. Step 4: Simplify right side
    387,515.67x = 129,397,450,851.51
  5. Step 5: Solve for x
    x = 129,397,450,851.51/387,515.67
  6. Step 6: Final answer
    x = 333,915.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.