Home / 390,384,267.84-585,406,301.76-131,551,243.20

Finding the Fourth Proportional to 390,384,267.84, 585,406,301.76 and 131,551,243.20

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Solution

The fourth proportional to 390,384,267.84, 585,406,301.76 and 131,551,243.20 is: 197,269,544.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,384,267.84 : 585,406,301.76 = 131,551,243.20 : x
  2. Step 2: Convert to fraction form
    390,384,267.84/585,406,301.76 = 131,551,243.20/x
  3. Step 3: Cross multiply
    390,384,267.84x = 585,406,301.76 × 131,551,243.20
  4. Step 4: Simplify right side
    390,384,267.84x = 77,010,926,773,642,352
  5. Step 5: Solve for x
    x = 77,010,926,773,642,352/390,384,267.84
  6. Step 6: Final answer
    x = 197,269,544.70

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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.