Home / 283,039.90-390,580.95-155,712.22

Finding the Fourth Proportional to 283,039.90, 390,580.95 and 155,712.22

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Solution

The fourth proportional to 283,039.90, 390,580.95 and 155,712.22 is: 214,875.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,039.90 : 390,580.95 = 155,712.22 : x
  2. Step 2: Convert to fraction form
    283,039.90/390,580.95 = 155,712.22/x
  3. Step 3: Cross multiply
    283,039.90x = 390,580.95 × 155,712.22
  4. Step 4: Simplify right side
    283,039.90x = 60,818,226,814.21
  5. Step 5: Solve for x
    x = 60,818,226,814.21/283,039.90
  6. Step 6: Final answer
    x = 214,875.10

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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.