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Finding the Fourth Proportional to 395,075.40, 592,613.10 and 99,587.40

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Solution

The fourth proportional to 395,075.40, 592,613.10 and 99,587.40 is: 149,381.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,075.40 : 592,613.10 = 99,587.40 : x
  2. Step 2: Convert to fraction form
    395,075.40/592,613.10 = 99,587.40/x
  3. Step 3: Cross multiply
    395,075.40x = 592,613.10 × 99,587.40
  4. Step 4: Simplify right side
    395,075.40x = 59,016,797,834.94
  5. Step 5: Solve for x
    x = 59,016,797,834.94/395,075.40
  6. Step 6: Final answer
    x = 149,381.10

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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.