Home / 278,308.08-384,032.70-155,807.10

Finding the Fourth Proportional to 278,308.08, 384,032.70 and 155,807.10

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Solution

The fourth proportional to 278,308.08, 384,032.70 and 155,807.10 is: 214,995.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,308.08 : 384,032.70 = 155,807.10 : x
  2. Step 2: Convert to fraction form
    278,308.08/384,032.70 = 155,807.10/x
  3. Step 3: Cross multiply
    278,308.08x = 384,032.70 × 155,807.10
  4. Step 4: Simplify right side
    278,308.08x = 59,835,021,292.17
  5. Step 5: Solve for x
    x = 59,835,021,292.17/278,308.08
  6. Step 6: Final answer
    x = 214,995.63

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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.