Home / 391,549,725.42-540,327,838.44-215,337,784.87

Finding the Fourth Proportional to 391,549,725.42, 540,327,838.44 and 215,337,784.87

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Solution

The fourth proportional to 391,549,725.42, 540,327,838.44 and 215,337,784.87 is: 297,160,213.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,549,725.42 : 540,327,838.44 = 215,337,784.87 : x
  2. Step 2: Convert to fraction form
    391,549,725.42/540,327,838.44 = 215,337,784.87/x
  3. Step 3: Cross multiply
    391,549,725.42x = 540,327,838.44 × 215,337,784.87
  4. Step 4: Simplify right side
    391,549,725.42x = 116,352,999,829,486,496
  5. Step 5: Solve for x
    x = 116,352,999,829,486,496/391,549,725.42
  6. Step 6: Final answer
    x = 297,160,213.06

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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.