Home / 278,971.61-384,624.45-180,681.21

Finding the Fourth Proportional to 278,971.61, 384,624.45 and 180,681.21

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Solution

The fourth proportional to 278,971.61, 384,624.45 and 180,681.21 is: 249,109.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,971.61 : 384,624.45 = 180,681.21 : x
  2. Step 2: Convert to fraction form
    278,971.61/384,624.45 = 180,681.21/x
  3. Step 3: Cross multiply
    278,971.61x = 384,624.45 × 180,681.21
  4. Step 4: Simplify right side
    278,971.61x = 69,494,411,021.58
  5. Step 5: Solve for x
    x = 69,494,411,021.58/278,971.61
  6. Step 6: Final answer
    x = 249,109.26

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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.