Home / 290,308,378.20-435,499,892.10-144,816,307.80

Finding the Fourth Proportional to 290,308,378.20, 435,499,892.10 and 144,816,307.80

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Solution

The fourth proportional to 290,308,378.20, 435,499,892.10 and 144,816,307.80 is: 217,243,080.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,308,378.20 : 435,499,892.10 = 144,816,307.80 : x
  2. Step 2: Convert to fraction form
    290,308,378.20/435,499,892.10 = 144,816,307.80/x
  3. Step 3: Cross multiply
    290,308,378.20x = 435,499,892.10 × 144,816,307.80
  4. Step 4: Simplify right side
    290,308,378.20x = 63,067,486,421,220,400
  5. Step 5: Solve for x
    x = 63,067,486,421,220,400/290,308,378.20
  6. Step 6: Final answer
    x = 217,243,080.66

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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.