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Finding the Fourth Proportional to 282,681.20, 424,021.80 and 124,828.40

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Solution

The fourth proportional to 282,681.20, 424,021.80 and 124,828.40 is: 187,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,681.20 : 424,021.80 = 124,828.40 : x
  2. Step 2: Convert to fraction form
    282,681.20/424,021.80 = 124,828.40/x
  3. Step 3: Cross multiply
    282,681.20x = 424,021.80 × 124,828.40
  4. Step 4: Simplify right side
    282,681.20x = 52,929,962,859.12
  5. Step 5: Solve for x
    x = 52,929,962,859.12/282,681.20
  6. Step 6: Final answer
    x = 187,242.60

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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.