Home / 421,875.42-581,582.61-300,806.88

Finding the Fourth Proportional to 421,875.42, 581,582.61 and 300,806.88

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Solution

The fourth proportional to 421,875.42, 581,582.61 and 300,806.88 is: 414,681.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,875.42 : 581,582.61 = 300,806.88 : x
  2. Step 2: Convert to fraction form
    421,875.42/581,582.61 = 300,806.88/x
  3. Step 3: Cross multiply
    421,875.42x = 581,582.61 × 300,806.88
  4. Step 4: Simplify right side
    421,875.42x = 174,944,050,376.36
  5. Step 5: Solve for x
    x = 174,944,050,376.36/421,875.42
  6. Step 6: Final answer
    x = 414,681.78

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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.