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Finding the Fourth Proportional to 640,092.30, 883,352.64 and 368,159.76

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Solution

The fourth proportional to 640,092.30, 883,352.64 and 368,159.76 is: 508,075.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,092.30 : 883,352.64 = 368,159.76 : x
  2. Step 2: Convert to fraction form
    640,092.30/883,352.64 = 368,159.76/x
  3. Step 3: Cross multiply
    640,092.30x = 883,352.64 × 368,159.76
  4. Step 4: Simplify right side
    640,092.30x = 325,214,895,937.77
  5. Step 5: Solve for x
    x = 325,214,895,937.77/640,092.30
  6. Step 6: Final answer
    x = 508,075.00

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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.