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Finding the Fourth Proportional to 401,113.60, 553,390.32 and 239,973.28

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Solution

The fourth proportional to 401,113.60, 553,390.32 and 239,973.28 is: 331,075.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,113.60 : 553,390.32 = 239,973.28 : x
  2. Step 2: Convert to fraction form
    401,113.60/553,390.32 = 239,973.28/x
  3. Step 3: Cross multiply
    401,113.60x = 553,390.32 × 239,973.28
  4. Step 4: Simplify right side
    401,113.60x = 132,798,890,210.65
  5. Step 5: Solve for x
    x = 132,798,890,210.65/401,113.60
  6. Step 6: Final answer
    x = 331,075.51

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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.