Home / 279,290.16-385,428.60-151,974

Finding the Fourth Proportional to 279,290.16, 385,428.60 and 151,974

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Solution

The fourth proportional to 279,290.16, 385,428.60 and 151,974 is: 209,728.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,290.16 : 385,428.60 = 151,974 : x
  2. Step 2: Convert to fraction form
    279,290.16/385,428.60 = 151,974/x
  3. Step 3: Cross multiply
    279,290.16x = 385,428.60 × 151,974
  4. Step 4: Simplify right side
    279,290.16x = 58,575,126,056.40
  5. Step 5: Solve for x
    x = 58,575,126,056.40/279,290.16
  6. Step 6: Final answer
    x = 209,728.57

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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.