Home / 290,142,005.20-435,213,007.80-198,309,000.40

Finding the Fourth Proportional to 290,142,005.20, 435,213,007.80 and 198,309,000.40

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Solution

The fourth proportional to 290,142,005.20, 435,213,007.80 and 198,309,000.40 is: 297,463,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,142,005.20 : 435,213,007.80 = 198,309,000.40 : x
  2. Step 2: Convert to fraction form
    290,142,005.20/435,213,007.80 = 198,309,000.40/x
  3. Step 3: Cross multiply
    290,142,005.20x = 435,213,007.80 × 198,309,000.40
  4. Step 4: Simplify right side
    290,142,005.20x = 86,306,656,537,895,408
  5. Step 5: Solve for x
    x = 86,306,656,537,895,408/290,142,005.20
  6. Step 6: Final answer
    x = 297,463,500.60

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1.5x scale

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.