Home / 282,770.50-390,232.41-155,455.30

Finding the Fourth Proportional to 282,770.50, 390,232.41 and 155,455.30

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Solution

The fourth proportional to 282,770.50, 390,232.41 and 155,455.30 is: 214,533.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,770.50 : 390,232.41 = 155,455.30 : x
  2. Step 2: Convert to fraction form
    282,770.50/390,232.41 = 155,455.30/x
  3. Step 3: Cross multiply
    282,770.50x = 390,232.41 × 155,455.30
  4. Step 4: Simplify right side
    282,770.50x = 60,663,696,366.27
  5. Step 5: Solve for x
    x = 60,663,696,366.27/282,770.50
  6. Step 6: Final answer
    x = 214,533.33

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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.