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Finding the Fourth Proportional to 390,549.53, 585,818.82 and 153,894.26

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Solution

The fourth proportional to 390,549.53, 585,818.82 and 153,894.26 is: 230,839.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,549.53 : 585,818.82 = 153,894.26 : x
  2. Step 2: Convert to fraction form
    390,549.53/585,818.82 = 153,894.26/x
  3. Step 3: Cross multiply
    390,549.53x = 585,818.82 × 153,894.26
  4. Step 4: Simplify right side
    390,549.53x = 90,154,150,868.88
  5. Step 5: Solve for x
    x = 90,154,150,868.88/390,549.53
  6. Step 6: Final answer
    x = 230,839.23

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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.