Home / 282,811.96-390,279.54-155,487.16

Finding the Fourth Proportional to 282,811.96, 390,279.54 and 155,487.16

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Solution

The fourth proportional to 282,811.96, 390,279.54 and 155,487.16 is: 214,571.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,811.96 : 390,279.54 = 155,487.16 : x
  2. Step 2: Convert to fraction form
    282,811.96/390,279.54 = 155,487.16/x
  3. Step 3: Cross multiply
    282,811.96x = 390,279.54 × 155,487.16
  4. Step 4: Simplify right side
    282,811.96x = 60,683,457,280.71
  5. Step 5: Solve for x
    x = 60,683,457,280.71/282,811.96
  6. Step 6: Final answer
    x = 214,571.75

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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.