Home / 219,132.76-302,411.84-128,476.12

Finding the Fourth Proportional to 219,132.76, 302,411.84 and 128,476.12

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Solution

The fourth proportional to 219,132.76, 302,411.84 and 128,476.12 is: 177,302.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,132.76 : 302,411.84 = 128,476.12 : x
  2. Step 2: Convert to fraction form
    219,132.76/302,411.84 = 128,476.12/x
  3. Step 3: Cross multiply
    219,132.76x = 302,411.84 × 128,476.12
  4. Step 4: Simplify right side
    219,132.76x = 38,852,699,845.26
  5. Step 5: Solve for x
    x = 38,852,699,845.26/219,132.76
  6. Step 6: Final answer
    x = 177,302.11

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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.