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Finding the Fourth Proportional to 449,592.71, 620,430.71 and 245,639.25

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Solution

The fourth proportional to 449,592.71, 620,430.71 and 245,639.25 is: 338,978.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,592.71 : 620,430.71 = 245,639.25 : x
  2. Step 2: Convert to fraction form
    449,592.71/620,430.71 = 245,639.25/x
  3. Step 3: Cross multiply
    449,592.71x = 620,430.71 × 245,639.25
  4. Step 4: Simplify right side
    449,592.71x = 152,402,133,053.17
  5. Step 5: Solve for x
    x = 152,402,133,053.17/449,592.71
  6. Step 6: Final answer
    x = 338,978.22

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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.