Home / 283,038.90-390,579.57-155,711.22

Finding the Fourth Proportional to 283,038.90, 390,579.57 and 155,711.22

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Solution

The fourth proportional to 283,038.90, 390,579.57 and 155,711.22 is: 214,873.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,038.90 : 390,579.57 = 155,711.22 : x
  2. Step 2: Convert to fraction form
    283,038.90/390,579.57 = 155,711.22/x
  3. Step 3: Cross multiply
    283,038.90x = 390,579.57 × 155,711.22
  4. Step 4: Simplify right side
    283,038.90x = 60,817,621,351.78
  5. Step 5: Solve for x
    x = 60,817,621,351.78/283,038.90
  6. Step 6: Final answer
    x = 214,873.72

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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.