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Finding the Fourth Proportional to 398,400.03, 549,776.04 and 217,108.10

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Solution

The fourth proportional to 398,400.03, 549,776.04 and 217,108.10 is: 299,600.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,400.03 : 549,776.04 = 217,108.10 : x
  2. Step 2: Convert to fraction form
    398,400.03/549,776.04 = 217,108.10/x
  3. Step 3: Cross multiply
    398,400.03x = 549,776.04 × 217,108.10
  4. Step 4: Simplify right side
    398,400.03x = 119,360,828,721.04
  5. Step 5: Solve for x
    x = 119,360,828,721.04/398,400.03
  6. Step 6: Final answer
    x = 299,600.45

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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.