Home / 209,322.12-288,870-113,834.40

Finding the Fourth Proportional to 209,322.12, 288,870 and 113,834.40

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Solution

The fourth proportional to 209,322.12, 288,870 and 113,834.40 is: 157,094.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,322.12 : 288,870 = 113,834.40 : x
  2. Step 2: Convert to fraction form
    209,322.12/288,870 = 113,834.40/x
  3. Step 3: Cross multiply
    209,322.12x = 288,870 × 113,834.40
  4. Step 4: Simplify right side
    209,322.12x = 32,883,343,128
  5. Step 5: Solve for x
    x = 32,883,343,128/209,322.12
  6. Step 6: Final answer
    x = 157,094.45

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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.