Home / 291,397,234.60-437,039,864.70-86,931,980.20

Finding the Fourth Proportional to 291,397,234.60, 437,039,864.70 and 86,931,980.20

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Solution

The fourth proportional to 291,397,234.60, 437,039,864.70 and 86,931,980.20 is: 130,381,267.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,397,234.60 : 437,039,864.70 = 86,931,980.20 : x
  2. Step 2: Convert to fraction form
    291,397,234.60/437,039,864.70 = 86,931,980.20/x
  3. Step 3: Cross multiply
    291,397,234.60x = 437,039,864.70 × 86,931,980.20
  4. Step 4: Simplify right side
    291,397,234.60x = 37,992,740,864,711,080
  5. Step 5: Solve for x
    x = 37,992,740,864,711,080/291,397,234.60
  6. Step 6: Final answer
    x = 130,381,267.75

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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.