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Finding the Fourth Proportional to 316,075.48, 474,076.72 and 79,400.16

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Solution

The fourth proportional to 316,075.48, 474,076.72 and 79,400.16 is: 119,091.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,075.48 : 474,076.72 = 79,400.16 : x
  2. Step 2: Convert to fraction form
    316,075.48/474,076.72 = 79,400.16/x
  3. Step 3: Cross multiply
    316,075.48x = 474,076.72 × 79,400.16
  4. Step 4: Simplify right side
    316,075.48x = 37,641,767,420.28
  5. Step 5: Solve for x
    x = 37,641,767,420.28/316,075.48
  6. Step 6: Final answer
    x = 119,091.07

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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.