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Finding the Fourth Proportional to 369,678.88, 510,295.12 and 287,845.36

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Solution

The fourth proportional to 369,678.88, 510,295.12 and 287,845.36 is: 397,334.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,678.88 : 510,295.12 = 287,845.36 : x
  2. Step 2: Convert to fraction form
    369,678.88/510,295.12 = 287,845.36/x
  3. Step 3: Cross multiply
    369,678.88x = 510,295.12 × 287,845.36
  4. Step 4: Simplify right side
    369,678.88x = 146,886,082,522.64
  5. Step 5: Solve for x
    x = 146,886,082,522.64/369,678.88
  6. Step 6: Final answer
    x = 397,334.26

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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.