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Finding the Fourth Proportional to 400,957.58, 553,316.78 and 217,192.69

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Solution

The fourth proportional to 400,957.58, 553,316.78 and 217,192.69 is: 299,723.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,957.58 : 553,316.78 = 217,192.69 : x
  2. Step 2: Convert to fraction form
    400,957.58/553,316.78 = 217,192.69/x
  3. Step 3: Cross multiply
    400,957.58x = 553,316.78 × 217,192.69
  4. Step 4: Simplify right side
    400,957.58x = 120,176,359,870.34
  5. Step 5: Solve for x
    x = 120,176,359,870.34/400,957.58
  6. Step 6: Final answer
    x = 299,723.38

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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.