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Finding the Fourth Proportional to 439,875, 607,030.74 and 238,671

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Solution

The fourth proportional to 439,875, 607,030.74 and 238,671 is: 329,367.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,875 : 607,030.74 = 238,671 : x
  2. Step 2: Convert to fraction form
    439,875/607,030.74 = 238,671/x
  3. Step 3: Cross multiply
    439,875x = 607,030.74 × 238,671
  4. Step 4: Simplify right side
    439,875x = 144,880,633,746.54
  5. Step 5: Solve for x
    x = 144,880,633,746.54/439,875
  6. Step 6: Final answer
    x = 329,367.74

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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.