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Finding the Fourth Proportional to 307,547.88, 424,395 and 178,490.10

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Solution

The fourth proportional to 307,547.88, 424,395 and 178,490.10 is: 246,304.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,547.88 : 424,395 = 178,490.10 : x
  2. Step 2: Convert to fraction form
    307,547.88/424,395 = 178,490.10/x
  3. Step 3: Cross multiply
    307,547.88x = 424,395 × 178,490.10
  4. Step 4: Simplify right side
    307,547.88x = 75,750,305,989.50
  5. Step 5: Solve for x
    x = 75,750,305,989.50/307,547.88
  6. Step 6: Final answer
    x = 246,304.11

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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.