Home / 282,386.79-389,694.24-155,070.45

Finding the Fourth Proportional to 282,386.79, 389,694.24 and 155,070.45

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Solution

The fourth proportional to 282,386.79, 389,694.24 and 155,070.45 is: 213,997.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,386.79 : 389,694.24 = 155,070.45 : x
  2. Step 2: Convert to fraction form
    282,386.79/389,694.24 = 155,070.45/x
  3. Step 3: Cross multiply
    282,386.79x = 389,694.24 × 155,070.45
  4. Step 4: Simplify right side
    282,386.79x = 60,430,061,159.21
  5. Step 5: Solve for x
    x = 60,430,061,159.21/282,386.79
  6. Step 6: Final answer
    x = 213,997.48

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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.