Home / 290,018,095.20-435,027,142.80-278,680,687.20

Finding the Fourth Proportional to 290,018,095.20, 435,027,142.80 and 278,680,687.20

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Solution

The fourth proportional to 290,018,095.20, 435,027,142.80 and 278,680,687.20 is: 418,021,030.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,018,095.20 : 435,027,142.80 = 278,680,687.20 : x
  2. Step 2: Convert to fraction form
    290,018,095.20/435,027,142.80 = 278,680,687.20/x
  3. Step 3: Cross multiply
    290,018,095.20x = 435,027,142.80 × 278,680,687.20
  4. Step 4: Simplify right side
    290,018,095.20x = 121,233,663,106,156,528
  5. Step 5: Solve for x
    x = 121,233,663,106,156,528/290,018,095.20
  6. Step 6: Final answer
    x = 418,021,030.80

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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.