Home / 210,911.12-291,050.28-115,411.40

Finding the Fourth Proportional to 210,911.12, 291,050.28 and 115,411.40

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Solution

The fourth proportional to 210,911.12, 291,050.28 and 115,411.40 is: 159,263.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,911.12 : 291,050.28 = 115,411.40 : x
  2. Step 2: Convert to fraction form
    210,911.12/291,050.28 = 115,411.40/x
  3. Step 3: Cross multiply
    210,911.12x = 291,050.28 × 115,411.40
  4. Step 4: Simplify right side
    210,911.12x = 33,590,520,285.19
  5. Step 5: Solve for x
    x = 33,590,520,285.19/210,911.12
  6. Step 6: Final answer
    x = 159,263.87

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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.