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Finding the Fourth Proportional to 282,001.20, 422,700.48 and 139,700.40

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Solution

The fourth proportional to 282,001.20, 422,700.48 and 139,700.40 is: 209,401.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,001.20 : 422,700.48 = 139,700.40 : x
  2. Step 2: Convert to fraction form
    282,001.20/422,700.48 = 139,700.40/x
  3. Step 3: Cross multiply
    282,001.20x = 422,700.48 × 139,700.40
  4. Step 4: Simplify right side
    282,001.20x = 59,051,426,136.19
  5. Step 5: Solve for x
    x = 59,051,426,136.19/282,001.20
  6. Step 6: Final answer
    x = 209,401.33

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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.