Home / 212,637.40-318,999.30-72,410.20

Finding the Fourth Proportional to 212,637.40, 318,999.30 and 72,410.20

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Solution

The fourth proportional to 212,637.40, 318,999.30 and 72,410.20 is: 108,630.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,637.40 : 318,999.30 = 72,410.20 : x
  2. Step 2: Convert to fraction form
    212,637.40/318,999.30 = 72,410.20/x
  3. Step 3: Cross multiply
    212,637.40x = 318,999.30 × 72,410.20
  4. Step 4: Simplify right side
    212,637.40x = 23,098,803,112.86
  5. Step 5: Solve for x
    x = 23,098,803,112.86/212,637.40
  6. Step 6: Final answer
    x = 108,630.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.