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Finding the Fourth Proportional to 425,358.39, 587,035.95 and 317,741.60

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Solution

The fourth proportional to 425,358.39, 587,035.95 and 317,741.60 is: 438,514.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,358.39 : 587,035.95 = 317,741.60 : x
  2. Step 2: Convert to fraction form
    425,358.39/587,035.95 = 317,741.60/x
  3. Step 3: Cross multiply
    425,358.39x = 587,035.95 × 317,741.60
  4. Step 4: Simplify right side
    425,358.39x = 186,525,739,075.34
  5. Step 5: Solve for x
    x = 186,525,739,075.34/425,358.39
  6. Step 6: Final answer
    x = 438,514.31

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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.