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Finding the Fourth Proportional to 479,075.34, 718,678.62 and 163,447.50

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Solution

The fourth proportional to 479,075.34, 718,678.62 and 163,447.50 is: 245,193.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,075.34 : 718,678.62 = 163,447.50 : x
  2. Step 2: Convert to fraction form
    479,075.34/718,678.62 = 163,447.50/x
  3. Step 3: Cross multiply
    479,075.34x = 718,678.62 × 163,447.50
  4. Step 4: Simplify right side
    479,075.34x = 117,466,223,742.45
  5. Step 5: Solve for x
    x = 117,466,223,742.45/479,075.34
  6. Step 6: Final answer
    x = 245,193.63

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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.