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Finding the Fourth Proportional to 376,698.87, 519,980.90 and 249,415.47

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Solution

The fourth proportional to 376,698.87, 519,980.90 and 249,415.47 is: 344,283.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,698.87 : 519,980.90 = 249,415.47 : x
  2. Step 2: Convert to fraction form
    376,698.87/519,980.90 = 249,415.47/x
  3. Step 3: Cross multiply
    376,698.87x = 519,980.90 × 249,415.47
  4. Step 4: Simplify right side
    376,698.87x = 129,691,280,564.52
  5. Step 5: Solve for x
    x = 129,691,280,564.52/376,698.87
  6. Step 6: Final answer
    x = 344,283.70

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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.