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Finding the Fourth Proportional to 326,807.40, 490,502.70 and 282,484.20

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Solution

The fourth proportional to 326,807.40, 490,502.70 and 282,484.20 is: 423,978.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,807.40 : 490,502.70 = 282,484.20 : x
  2. Step 2: Convert to fraction form
    326,807.40/490,502.70 = 282,484.20/x
  3. Step 3: Cross multiply
    326,807.40x = 490,502.70 × 282,484.20
  4. Step 4: Simplify right side
    326,807.40x = 138,559,262,807.34
  5. Step 5: Solve for x
    x = 138,559,262,807.34/326,807.40
  6. Step 6: Final answer
    x = 423,978.35

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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.