Home / 282,777.49-390,216.45-155,453.05

Finding the Fourth Proportional to 282,777.49, 390,216.45 and 155,453.05

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Solution

The fourth proportional to 282,777.49, 390,216.45 and 155,453.05 is: 214,516.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,777.49 : 390,216.45 = 155,453.05 : x
  2. Step 2: Convert to fraction form
    282,777.49/390,216.45 = 155,453.05/x
  3. Step 3: Cross multiply
    282,777.49x = 390,216.45 × 155,453.05
  4. Step 4: Simplify right side
    282,777.49x = 60,660,337,312.67
  5. Step 5: Solve for x
    x = 60,660,337,312.67/282,777.49
  6. Step 6: Final answer
    x = 214,516.15

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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.