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Finding the Fourth Proportional to 398,588.33, 549,878.27 and 253,316.25

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Solution

The fourth proportional to 398,588.33, 549,878.27 and 253,316.25 is: 349,466.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,588.33 : 549,878.27 = 253,316.25 : x
  2. Step 2: Convert to fraction form
    398,588.33/549,878.27 = 253,316.25/x
  3. Step 3: Cross multiply
    398,588.33x = 549,878.27 × 253,316.25
  4. Step 4: Simplify right side
    398,588.33x = 139,293,100,046.31
  5. Step 5: Solve for x
    x = 139,293,100,046.31/398,588.33
  6. Step 6: Final answer
    x = 349,466.08

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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.