Home / 210,981.32-291,154.20-115,488.08

Finding the Fourth Proportional to 210,981.32, 291,154.20 and 115,488.08

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Solution

The fourth proportional to 210,981.32, 291,154.20 and 115,488.08 is: 159,373.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,981.32 : 291,154.20 = 115,488.08 : x
  2. Step 2: Convert to fraction form
    210,981.32/291,154.20 = 115,488.08/x
  3. Step 3: Cross multiply
    210,981.32x = 291,154.20 × 115,488.08
  4. Step 4: Simplify right side
    210,981.32x = 33,624,839,541.94
  5. Step 5: Solve for x
    x = 33,624,839,541.94/210,981.32
  6. Step 6: Final answer
    x = 159,373.54

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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.