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Finding the Fourth Proportional to 401,322.61, 553,847.82 and 238,075.76

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Solution

The fourth proportional to 401,322.61, 553,847.82 and 238,075.76 is: 328,557.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,322.61 : 553,847.82 = 238,075.76 : x
  2. Step 2: Convert to fraction form
    401,322.61/553,847.82 = 238,075.76/x
  3. Step 3: Cross multiply
    401,322.61x = 553,847.82 × 238,075.76
  4. Step 4: Simplify right side
    401,322.61x = 131,857,740,670.84
  5. Step 5: Solve for x
    x = 131,857,740,670.84/401,322.61
  6. Step 6: Final answer
    x = 328,557.97

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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.