Home / 420,260,313.60-630,390,470.40-147,631,080.60

Finding the Fourth Proportional to 420,260,313.60, 630,390,470.40 and 147,631,080.60

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Solution

The fourth proportional to 420,260,313.60, 630,390,470.40 and 147,631,080.60 is: 221,446,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,260,313.60 : 630,390,470.40 = 147,631,080.60 : x
  2. Step 2: Convert to fraction form
    420,260,313.60/630,390,470.40 = 147,631,080.60/x
  3. Step 3: Cross multiply
    420,260,313.60x = 630,390,470.40 × 147,631,080.60
  4. Step 4: Simplify right side
    420,260,313.60x = 93,065,226,345,094,304
  5. Step 5: Solve for x
    x = 93,065,226,345,094,304/420,260,313.60
  6. Step 6: Final answer
    x = 221,446,620.90

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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.