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Finding the Fourth Proportional to 315,271.14, 435,075.30 and 172,034.34

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Solution

The fourth proportional to 315,271.14, 435,075.30 and 172,034.34 is: 237,408.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,271.14 : 435,075.30 = 172,034.34 : x
  2. Step 2: Convert to fraction form
    315,271.14/435,075.30 = 172,034.34/x
  3. Step 3: Cross multiply
    315,271.14x = 435,075.30 × 172,034.34
  4. Step 4: Simplify right side
    315,271.14x = 74,847,892,085.80
  5. Step 5: Solve for x
    x = 74,847,892,085.80/315,271.14
  6. Step 6: Final answer
    x = 237,408.00

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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.