Home / 209,231.04-288,729.18-118,581.78

Finding the Fourth Proportional to 209,231.04, 288,729.18 and 118,581.78

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Solution

The fourth proportional to 209,231.04, 288,729.18 and 118,581.78 is: 163,637.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,231.04 : 288,729.18 = 118,581.78 : x
  2. Step 2: Convert to fraction form
    209,231.04/288,729.18 = 118,581.78/x
  3. Step 3: Cross multiply
    209,231.04x = 288,729.18 × 118,581.78
  4. Step 4: Simplify right side
    209,231.04x = 34,238,020,102.34
  5. Step 5: Solve for x
    x = 34,238,020,102.34/209,231.04
  6. Step 6: Final answer
    x = 163,637.38

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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.