Home / 283,031.40-390,569.22-155,703.72

Finding the Fourth Proportional to 283,031.40, 390,569.22 and 155,703.72

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Solution

The fourth proportional to 283,031.40, 390,569.22 and 155,703.72 is: 214,863.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,031.40 : 390,569.22 = 155,703.72 : x
  2. Step 2: Convert to fraction form
    283,031.40/390,569.22 = 155,703.72/x
  3. Step 3: Cross multiply
    283,031.40x = 390,569.22 × 155,703.72
  4. Step 4: Simplify right side
    283,031.40x = 60,813,080,471.50
  5. Step 5: Solve for x
    x = 60,813,080,471.50/283,031.40
  6. Step 6: Final answer
    x = 214,863.37

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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.