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Finding the Fourth Proportional to 539,145.59, 744,018.80 and 297,443.21

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Solution

The fourth proportional to 539,145.59, 744,018.80 and 297,443.21 is: 410,470.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,145.59 : 744,018.80 = 297,443.21 : x
  2. Step 2: Convert to fraction form
    539,145.59/744,018.80 = 297,443.21/x
  3. Step 3: Cross multiply
    539,145.59x = 744,018.80 × 297,443.21
  4. Step 4: Simplify right side
    539,145.59x = 221,303,334,965.04
  5. Step 5: Solve for x
    x = 221,303,334,965.04/539,145.59
  6. Step 6: Final answer
    x = 410,470.46

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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.