Home / 211,438.40-317,158.65-53,666.90

Finding the Fourth Proportional to 211,438.40, 317,158.65 and 53,666.90

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Solution

The fourth proportional to 211,438.40, 317,158.65 and 53,666.90 is: 80,500.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,438.40 : 317,158.65 = 53,666.90 : x
  2. Step 2: Convert to fraction form
    211,438.40/317,158.65 = 53,666.90/x
  3. Step 3: Cross multiply
    211,438.40x = 317,158.65 × 53,666.90
  4. Step 4: Simplify right side
    211,438.40x = 17,020,919,967.89
  5. Step 5: Solve for x
    x = 17,020,919,967.89/211,438.40
  6. Step 6: Final answer
    x = 80,500.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.