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Finding the Fourth Proportional to 374,528, 561,866.12 and 121,792.20

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Solution

The fourth proportional to 374,528, 561,866.12 and 121,792.20 is: 182,712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,528 : 561,866.12 = 121,792.20 : x
  2. Step 2: Convert to fraction form
    374,528/561,866.12 = 121,792.20/x
  3. Step 3: Cross multiply
    374,528x = 561,866.12 × 121,792.20
  4. Step 4: Simplify right side
    374,528x = 68,430,910,860.26
  5. Step 5: Solve for x
    x = 68,430,910,860.26/374,528
  6. Step 6: Final answer
    x = 182,712.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.