Home / 278,681.10-384,567.04-157,823.25

Finding the Fourth Proportional to 278,681.10, 384,567.04 and 157,823.25

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Solution

The fourth proportional to 278,681.10, 384,567.04 and 157,823.25 is: 217,788.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,681.10 : 384,567.04 = 157,823.25 : x
  2. Step 2: Convert to fraction form
    278,681.10/384,567.04 = 157,823.25/x
  3. Step 3: Cross multiply
    278,681.10x = 384,567.04 × 157,823.25
  4. Step 4: Simplify right side
    278,681.10x = 60,693,621,107.79
  5. Step 5: Solve for x
    x = 60,693,621,107.79/278,681.10
  6. Step 6: Final answer
    x = 217,788.80

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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.