Home / 280,482,800.10-420,724,200.15-177,170,669.70

Finding the Fourth Proportional to 280,482,800.10, 420,724,200.15 and 177,170,669.70

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Solution

The fourth proportional to 280,482,800.10, 420,724,200.15 and 177,170,669.70 is: 265,756,004.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,482,800.10 : 420,724,200.15 = 177,170,669.70 : x
  2. Step 2: Convert to fraction form
    280,482,800.10/420,724,200.15 = 177,170,669.70/x
  3. Step 3: Cross multiply
    280,482,800.10x = 420,724,200.15 × 177,170,669.70
  4. Step 4: Simplify right side
    280,482,800.10x = 74,539,988,299,572,336
  5. Step 5: Solve for x
    x = 74,539,988,299,572,336/280,482,800.10
  6. Step 6: Final answer
    x = 265,756,004.55

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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.