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Finding the Fourth Proportional to 398,348.16, 549,747.60 and 243,365.76

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Solution

The fourth proportional to 398,348.16, 549,747.60 and 243,365.76 is: 335,861.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,348.16 : 549,747.60 = 243,365.76 : x
  2. Step 2: Convert to fraction form
    398,348.16/549,747.60 = 243,365.76/x
  3. Step 3: Cross multiply
    398,348.16x = 549,747.60 × 243,365.76
  4. Step 4: Simplify right side
    398,348.16x = 133,789,742,482.18
  5. Step 5: Solve for x
    x = 133,789,742,482.18/398,348.16
  6. Step 6: Final answer
    x = 335,861.33

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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.