Home / 209,322.90-288,856.80-118,684.98

Finding the Fourth Proportional to 209,322.90, 288,856.80 and 118,684.98

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Solution

The fourth proportional to 209,322.90, 288,856.80 and 118,684.98 is: 163,780.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,322.90 : 288,856.80 = 118,684.98 : x
  2. Step 2: Convert to fraction form
    209,322.90/288,856.80 = 118,684.98/x
  3. Step 3: Cross multiply
    209,322.90x = 288,856.80 × 118,684.98
  4. Step 4: Simplify right side
    209,322.90x = 34,282,963,530.86
  5. Step 5: Solve for x
    x = 34,282,963,530.86/209,322.90
  6. Step 6: Final answer
    x = 163,780.28

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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.