Home / 211,323.47-291,656.25-130,776.93

Finding the Fourth Proportional to 211,323.47, 291,656.25 and 130,776.93

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Solution

The fourth proportional to 211,323.47, 291,656.25 and 130,776.93 is: 180,490.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,323.47 : 291,656.25 = 130,776.93 : x
  2. Step 2: Convert to fraction form
    211,323.47/291,656.25 = 130,776.93/x
  3. Step 3: Cross multiply
    211,323.47x = 291,656.25 × 130,776.93
  4. Step 4: Simplify right side
    211,323.47x = 38,141,908,990.31
  5. Step 5: Solve for x
    x = 38,141,908,990.31/211,323.47
  6. Step 6: Final answer
    x = 180,490.65

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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.