Home / 390,259,355-585,423,441.52-110,142,764.86

Finding the Fourth Proportional to 390,259,355, 585,423,441.52 and 110,142,764.86

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Solution

The fourth proportional to 390,259,355, 585,423,441.52 and 110,142,764.86 is: 165,223,858.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,259,355 : 585,423,441.52 = 110,142,764.86 : x
  2. Step 2: Convert to fraction form
    390,259,355/585,423,441.52 = 110,142,764.86/x
  3. Step 3: Cross multiply
    390,259,355x = 585,423,441.52 × 110,142,764.86
  4. Step 4: Simplify right side
    390,259,355x = 64,480,156,459,942,208
  5. Step 5: Solve for x
    x = 64,480,156,459,942,208/390,259,355
  6. Step 6: Final answer
    x = 165,223,858.53

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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.