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Finding the Fourth Proportional to 238,075.78, 328,549.53 and 130,639.54

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Solution

The fourth proportional to 238,075.78, 328,549.53 and 130,639.54 is: 180,285.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,075.78 : 328,549.53 = 130,639.54 : x
  2. Step 2: Convert to fraction form
    238,075.78/328,549.53 = 130,639.54/x
  3. Step 3: Cross multiply
    238,075.78x = 328,549.53 × 130,639.54
  4. Step 4: Simplify right side
    238,075.78x = 42,921,559,466.42
  5. Step 5: Solve for x
    x = 42,921,559,466.42/238,075.78
  6. Step 6: Final answer
    x = 180,285.28

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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.