Home / 486,988.90-672,032.14-272,130.72

Finding the Fourth Proportional to 486,988.90, 672,032.14 and 272,130.72

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Solution

The fourth proportional to 486,988.90, 672,032.14 and 272,130.72 is: 375,533.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,988.90 : 672,032.14 = 272,130.72 : x
  2. Step 2: Convert to fraction form
    486,988.90/672,032.14 = 272,130.72/x
  3. Step 3: Cross multiply
    486,988.90x = 672,032.14 × 272,130.72
  4. Step 4: Simplify right side
    486,988.90x = 182,880,590,121.34
  5. Step 5: Solve for x
    x = 182,880,590,121.34/486,988.90
  6. Step 6: Final answer
    x = 375,533.39

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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.