Home / 282,451.42-389,783.91-155,123.74

Finding the Fourth Proportional to 282,451.42, 389,783.91 and 155,123.74

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Solution

The fourth proportional to 282,451.42, 389,783.91 and 155,123.74 is: 214,071.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,451.42 : 389,783.91 = 155,123.74 : x
  2. Step 2: Convert to fraction form
    282,451.42/389,783.91 = 155,123.74/x
  3. Step 3: Cross multiply
    282,451.42x = 389,783.91 × 155,123.74
  4. Step 4: Simplify right side
    282,451.42x = 60,464,737,911.02
  5. Step 5: Solve for x
    x = 60,464,737,911.02/282,451.42
  6. Step 6: Final answer
    x = 214,071.28

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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.