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Finding the Fourth Proportional to 400,900.68, 553,223.10 and 219,613.20

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Solution

The fourth proportional to 400,900.68, 553,223.10 and 219,613.20 is: 303,055.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,900.68 : 553,223.10 = 219,613.20 : x
  2. Step 2: Convert to fraction form
    400,900.68/553,223.10 = 219,613.20/x
  3. Step 3: Cross multiply
    400,900.68x = 553,223.10 × 219,613.20
  4. Step 4: Simplify right side
    400,900.68x = 121,495,095,304.92
  5. Step 5: Solve for x
    x = 121,495,095,304.92/400,900.68
  6. Step 6: Final answer
    x = 303,055.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.