Home / 219,130.29-302,401.98-128,539.89

Finding the Fourth Proportional to 219,130.29, 302,401.98 and 128,539.89

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Solution

The fourth proportional to 219,130.29, 302,401.98 and 128,539.89 is: 177,386.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,130.29 : 302,401.98 = 128,539.89 : x
  2. Step 2: Convert to fraction form
    219,130.29/302,401.98 = 128,539.89/x
  3. Step 3: Cross multiply
    219,130.29x = 302,401.98 × 128,539.89
  4. Step 4: Simplify right side
    219,130.29x = 38,870,717,244.98
  5. Step 5: Solve for x
    x = 38,870,717,244.98/219,130.29
  6. Step 6: Final answer
    x = 177,386.33

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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.