Home / 309,928.31-427,671.53-173,931.08

Finding the Fourth Proportional to 309,928.31, 427,671.53 and 173,931.08

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Solution

The fourth proportional to 309,928.31, 427,671.53 and 173,931.08 is: 240,008.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,928.31 : 427,671.53 = 173,931.08 : x
  2. Step 2: Convert to fraction form
    309,928.31/427,671.53 = 173,931.08/x
  3. Step 3: Cross multiply
    309,928.31x = 427,671.53 × 173,931.08
  4. Step 4: Simplify right side
    309,928.31x = 74,385,368,892.02
  5. Step 5: Solve for x
    x = 74,385,368,892.02/309,928.31
  6. Step 6: Final answer
    x = 240,008.31

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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.