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Finding the Fourth Proportional to 351,984.65, 528,075.40 and 115,493.40

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Solution

The fourth proportional to 351,984.65, 528,075.40 and 115,493.40 is: 173,272.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,984.65 : 528,075.40 = 115,493.40 : x
  2. Step 2: Convert to fraction form
    351,984.65/528,075.40 = 115,493.40/x
  3. Step 3: Cross multiply
    351,984.65x = 528,075.40 × 115,493.40
  4. Step 4: Simplify right side
    351,984.65x = 60,989,223,402.36
  5. Step 5: Solve for x
    x = 60,989,223,402.36/351,984.65
  6. Step 6: Final answer
    x = 173,272.40

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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.