Home / 278,281.02-384,027.93-157,419.72

Finding the Fourth Proportional to 278,281.02, 384,027.93 and 157,419.72

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Solution

The fourth proportional to 278,281.02, 384,027.93 and 157,419.72 is: 217,239.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,281.02 : 384,027.93 = 157,419.72 : x
  2. Step 2: Convert to fraction form
    278,281.02/384,027.93 = 157,419.72/x
  3. Step 3: Cross multiply
    278,281.02x = 384,027.93 × 157,419.72
  4. Step 4: Simplify right side
    278,281.02x = 60,453,569,212.78
  5. Step 5: Solve for x
    x = 60,453,569,212.78/278,281.02
  6. Step 6: Final answer
    x = 217,239.28

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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.