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Finding the Fourth Proportional to 398,316.80, 549,670.24 and 217,030.23

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Solution

The fourth proportional to 398,316.80, 549,670.24 and 217,030.23 is: 299,497.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,316.80 : 549,670.24 = 217,030.23 : x
  2. Step 2: Convert to fraction form
    398,316.80/549,670.24 = 217,030.23/x
  3. Step 3: Cross multiply
    398,316.80x = 549,670.24 × 217,030.23
  4. Step 4: Simplify right side
    398,316.80x = 119,295,057,526.20
  5. Step 5: Solve for x
    x = 119,295,057,526.20/398,316.80
  6. Step 6: Final answer
    x = 299,497.93

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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.