Home / 282,327.60-389,612.75-155,011.40

Finding the Fourth Proportional to 282,327.60, 389,612.75 and 155,011.40

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Solution

The fourth proportional to 282,327.60, 389,612.75 and 155,011.40 is: 213,916.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,327.60 : 389,612.75 = 155,011.40 : x
  2. Step 2: Convert to fraction form
    282,327.60/389,612.75 = 155,011.40/x
  3. Step 3: Cross multiply
    282,327.60x = 389,612.75 × 155,011.40
  4. Step 4: Simplify right side
    282,327.60x = 60,394,417,835.35
  5. Step 5: Solve for x
    x = 60,394,417,835.35/282,327.60
  6. Step 6: Final answer
    x = 213,916.10

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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.