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Finding the Fourth Proportional to 328,181.67, 492,075.45 and 128,263.77

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Solution

The fourth proportional to 328,181.67, 492,075.45 and 128,263.77 is: 192,318.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,181.67 : 492,075.45 = 128,263.77 : x
  2. Step 2: Convert to fraction form
    328,181.67/492,075.45 = 128,263.77/x
  3. Step 3: Cross multiply
    328,181.67x = 492,075.45 × 128,263.77
  4. Step 4: Simplify right side
    328,181.67x = 63,115,452,341.45
  5. Step 5: Solve for x
    x = 63,115,452,341.45/328,181.67
  6. Step 6: Final answer
    x = 192,318.64

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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.