Home / 278,281.43-384,028.50-157,420.16

Finding the Fourth Proportional to 278,281.43, 384,028.50 and 157,420.16

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Solution

The fourth proportional to 278,281.43, 384,028.50 and 157,420.16 is: 217,239.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,281.43 : 384,028.50 = 157,420.16 : x
  2. Step 2: Convert to fraction form
    278,281.43/384,028.50 = 157,420.16/x
  3. Step 3: Cross multiply
    278,281.43x = 384,028.50 × 157,420.16
  4. Step 4: Simplify right side
    278,281.43x = 60,453,827,914.56
  5. Step 5: Solve for x
    x = 60,453,827,914.56/278,281.43
  6. Step 6: Final answer
    x = 217,239.89

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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.