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Finding the Fourth Proportional to 313,681.16, 470,520.79 and 89,041.78

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Solution

The fourth proportional to 313,681.16, 470,520.79 and 89,041.78 is: 133,562.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,681.16 : 470,520.79 = 89,041.78 : x
  2. Step 2: Convert to fraction form
    313,681.16/470,520.79 = 89,041.78/x
  3. Step 3: Cross multiply
    313,681.16x = 470,520.79 × 89,041.78
  4. Step 4: Simplify right side
    313,681.16x = 41,896,009,284.58
  5. Step 5: Solve for x
    x = 41,896,009,284.58/313,681.16
  6. Step 6: Final answer
    x = 133,562.40

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1.5x scale

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.