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Finding the Fourth Proportional to 280,888.80, 420,458.40 and 162,207.60

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Solution

The fourth proportional to 280,888.80, 420,458.40 and 162,207.60 is: 242,806.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,888.80 : 420,458.40 = 162,207.60 : x
  2. Step 2: Convert to fraction form
    280,888.80/420,458.40 = 162,207.60/x
  3. Step 3: Cross multiply
    280,888.80x = 420,458.40 × 162,207.60
  4. Step 4: Simplify right side
    280,888.80x = 68,201,547,963.84
  5. Step 5: Solve for x
    x = 68,201,547,963.84/280,888.80
  6. Step 6: Final answer
    x = 242,806.22

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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.