Home / 487,130.34-672,242.35-272,265.79

Finding the Fourth Proportional to 487,130.34, 672,242.35 and 272,265.79

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Solution

The fourth proportional to 487,130.34, 672,242.35 and 272,265.79 is: 375,728.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,130.34 : 672,242.35 = 272,265.79 : x
  2. Step 2: Convert to fraction form
    487,130.34/672,242.35 = 272,265.79/x
  3. Step 3: Cross multiply
    487,130.34x = 672,242.35 × 272,265.79
  4. Step 4: Simplify right side
    487,130.34x = 183,028,594,494.21
  5. Step 5: Solve for x
    x = 183,028,594,494.21/487,130.34
  6. Step 6: Final answer
    x = 375,728.18

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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.