Home / 382,905.47-528,572.91-272,595.21

Finding the Fourth Proportional to 382,905.47, 528,572.91 and 272,595.21

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Solution

The fourth proportional to 382,905.47, 528,572.91 and 272,595.21 is: 376,297.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,905.47 : 528,572.91 = 272,595.21 : x
  2. Step 2: Convert to fraction form
    382,905.47/528,572.91 = 272,595.21/x
  3. Step 3: Cross multiply
    382,905.47x = 528,572.91 × 272,595.21
  4. Step 4: Simplify right side
    382,905.47x = 144,086,443,401.76
  5. Step 5: Solve for x
    x = 144,086,443,401.76/382,905.47
  6. Step 6: Final answer
    x = 376,297.69

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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.