Home / 282,910.76-390,409.07-155,586.35

Finding the Fourth Proportional to 282,910.76, 390,409.07 and 155,586.35

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Solution

The fourth proportional to 282,910.76, 390,409.07 and 155,586.35 is: 214,704.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,910.76 : 390,409.07 = 155,586.35 : x
  2. Step 2: Convert to fraction form
    282,910.76/390,409.07 = 155,586.35/x
  3. Step 3: Cross multiply
    282,910.76x = 390,409.07 × 155,586.35
  4. Step 4: Simplify right side
    282,910.76x = 60,742,319,478.22
  5. Step 5: Solve for x
    x = 60,742,319,478.22/282,910.76
  6. Step 6: Final answer
    x = 214,704.88

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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.