Home / 310,215.18-428,030.54-181,095.05

Finding the Fourth Proportional to 310,215.18, 428,030.54 and 181,095.05

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Solution

The fourth proportional to 310,215.18, 428,030.54 and 181,095.05 is: 249,872.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,215.18 : 428,030.54 = 181,095.05 : x
  2. Step 2: Convert to fraction form
    310,215.18/428,030.54 = 181,095.05/x
  3. Step 3: Cross multiply
    310,215.18x = 428,030.54 × 181,095.05
  4. Step 4: Simplify right side
    310,215.18x = 77,514,213,565.64
  5. Step 5: Solve for x
    x = 77,514,213,565.64/310,215.18
  6. Step 6: Final answer
    x = 249,872.41

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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.