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Finding the Fourth Proportional to 312,095.80, 430,692.30 and 168,855.76

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Solution

The fourth proportional to 312,095.80, 430,692.30 and 168,855.76 is: 233,021.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,095.80 : 430,692.30 = 168,855.76 : x
  2. Step 2: Convert to fraction form
    312,095.80/430,692.30 = 168,855.76/x
  3. Step 3: Cross multiply
    312,095.80x = 430,692.30 × 168,855.76
  4. Step 4: Simplify right side
    312,095.80x = 72,724,875,642.65
  5. Step 5: Solve for x
    x = 72,724,875,642.65/312,095.80
  6. Step 6: Final answer
    x = 233,021.00

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1.5x scale

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.