Home / 287,679.36-396,988.38-180,307.38

Finding the Fourth Proportional to 287,679.36, 396,988.38 and 180,307.38

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Solution

The fourth proportional to 287,679.36, 396,988.38 and 180,307.38 is: 248,818.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,679.36 : 396,988.38 = 180,307.38 : x
  2. Step 2: Convert to fraction form
    287,679.36/396,988.38 = 180,307.38/x
  3. Step 3: Cross multiply
    287,679.36x = 396,988.38 × 180,307.38
  4. Step 4: Simplify right side
    287,679.36x = 71,579,934,688.24
  5. Step 5: Solve for x
    x = 71,579,934,688.24/287,679.36
  6. Step 6: Final answer
    x = 248,818.46

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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.