Home / 209,320.63-288,853.70-118,682.71

Finding the Fourth Proportional to 209,320.63, 288,853.70 and 118,682.71

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Solution

The fourth proportional to 209,320.63, 288,853.70 and 118,682.71 is: 163,777.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,320.63 : 288,853.70 = 118,682.71 : x
  2. Step 2: Convert to fraction form
    209,320.63/288,853.70 = 118,682.71/x
  3. Step 3: Cross multiply
    209,320.63x = 288,853.70 × 118,682.71
  4. Step 4: Simplify right side
    209,320.63x = 34,281,938,593.98
  5. Step 5: Solve for x
    x = 34,281,938,593.98/209,320.63
  6. Step 6: Final answer
    x = 163,777.16

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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.