Home / 209,001.45-288,439.78-118,373.53

Finding the Fourth Proportional to 209,001.45, 288,439.78 and 118,373.53

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Solution

The fourth proportional to 209,001.45, 288,439.78 and 118,373.53 is: 163,365.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,001.45 : 288,439.78 = 118,373.53 : x
  2. Step 2: Convert to fraction form
    209,001.45/288,439.78 = 118,373.53/x
  3. Step 3: Cross multiply
    209,001.45x = 288,439.78 × 118,373.53
  4. Step 4: Simplify right side
    209,001.45x = 34,143,636,222.32
  5. Step 5: Solve for x
    x = 34,143,636,222.32/209,001.45
  6. Step 6: Final answer
    x = 163,365.55

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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.