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Finding the Fourth Proportional to 442,140.40, 661,799.40 and 348,828.40

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Solution

The fourth proportional to 442,140.40, 661,799.40 and 348,828.40 is: 522,129.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,140.40 : 661,799.40 = 348,828.40 : x
  2. Step 2: Convert to fraction form
    442,140.40/661,799.40 = 348,828.40/x
  3. Step 3: Cross multiply
    442,140.40x = 661,799.40 × 348,828.40
  4. Step 4: Simplify right side
    442,140.40x = 230,854,425,822.96
  5. Step 5: Solve for x
    x = 230,854,425,822.96/442,140.40
  6. Step 6: Final answer
    x = 522,129.23

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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.