Home / 282,774.42-390,236.21-153,721.62

Finding the Fourth Proportional to 282,774.42, 390,236.21 and 153,721.62

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Solution

The fourth proportional to 282,774.42, 390,236.21 and 153,721.62 is: 212,139.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,774.42 : 390,236.21 = 153,721.62 : x
  2. Step 2: Convert to fraction form
    282,774.42/390,236.21 = 153,721.62/x
  3. Step 3: Cross multiply
    282,774.42x = 390,236.21 × 153,721.62
  4. Step 4: Simplify right side
    282,774.42x = 59,987,742,383.86
  5. Step 5: Solve for x
    x = 59,987,742,383.86/282,774.42
  6. Step 6: Final answer
    x = 212,139.92

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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.