Home / 282,816.60-390,276.93-155,491.21

Finding the Fourth Proportional to 282,816.60, 390,276.93 and 155,491.21

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Solution

The fourth proportional to 282,816.60, 390,276.93 and 155,491.21 is: 214,572.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,816.60 : 390,276.93 = 155,491.21 : x
  2. Step 2: Convert to fraction form
    282,816.60/390,276.93 = 155,491.21/x
  3. Step 3: Cross multiply
    282,816.60x = 390,276.93 × 155,491.21
  4. Step 4: Simplify right side
    282,816.60x = 60,684,632,080.79
  5. Step 5: Solve for x
    x = 60,684,632,080.79/282,816.60
  6. Step 6: Final answer
    x = 214,572.38

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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.