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Finding the Fourth Proportional to 398,505.50, 549,551.24 and 253,054.73

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Solution

The fourth proportional to 398,505.50, 549,551.24 and 253,054.73 is: 348,970.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,505.50 : 549,551.24 = 253,054.73 : x
  2. Step 2: Convert to fraction form
    398,505.50/549,551.24 = 253,054.73/x
  3. Step 3: Cross multiply
    398,505.50x = 549,551.24 × 253,054.73
  4. Step 4: Simplify right side
    398,505.50x = 139,066,536,646.34
  5. Step 5: Solve for x
    x = 139,066,536,646.34/398,505.50
  6. Step 6: Final answer
    x = 348,970.19

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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.