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Finding the Fourth Proportional to 306,661.30, 423,192.55 and 170,692.32

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Solution

The fourth proportional to 306,661.30, 423,192.55 and 170,692.32 is: 235,555.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,661.30 : 423,192.55 = 170,692.32 : x
  2. Step 2: Convert to fraction form
    306,661.30/423,192.55 = 170,692.32/x
  3. Step 3: Cross multiply
    306,661.30x = 423,192.55 × 170,692.32
  4. Step 4: Simplify right side
    306,661.30x = 72,235,718,166.22
  5. Step 5: Solve for x
    x = 72,235,718,166.22/306,661.30
  6. Step 6: Final answer
    x = 235,555.38

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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.