Home / 238,140.18-328,637.70-130,720.22

Finding the Fourth Proportional to 238,140.18, 328,637.70 and 130,720.22

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Solution

The fourth proportional to 238,140.18, 328,637.70 and 130,720.22 is: 180,396.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,140.18 : 328,637.70 = 130,720.22 : x
  2. Step 2: Convert to fraction form
    238,140.18/328,637.70 = 130,720.22/x
  3. Step 3: Cross multiply
    238,140.18x = 328,637.70 × 130,720.22
  4. Step 4: Simplify right side
    238,140.18x = 42,959,590,801.11
  5. Step 5: Solve for x
    x = 42,959,590,801.11/238,140.18
  6. Step 6: Final answer
    x = 180,396.23

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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.