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Finding the Fourth Proportional to 376,778.10, 520,090.47 and 249,494.70

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Solution

The fourth proportional to 376,778.10, 520,090.47 and 249,494.70 is: 344,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,778.10 : 520,090.47 = 249,494.70 : x
  2. Step 2: Convert to fraction form
    376,778.10/520,090.47 = 249,494.70/x
  3. Step 3: Cross multiply
    376,778.10x = 520,090.47 × 249,494.70
  4. Step 4: Simplify right side
    376,778.10x = 129,759,815,785.51
  5. Step 5: Solve for x
    x = 129,759,815,785.51/376,778.10
  6. Step 6: Final answer
    x = 344,393.20

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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.