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Finding the Fourth Proportional to 330,897.04, 492,603.20 and 328,928.74

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Solution

The fourth proportional to 330,897.04, 492,603.20 and 328,928.74 is: 489,673.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,897.04 : 492,603.20 = 328,928.74 : x
  2. Step 2: Convert to fraction form
    330,897.04/492,603.20 = 328,928.74/x
  3. Step 3: Cross multiply
    330,897.04x = 492,603.20 × 328,928.74
  4. Step 4: Simplify right side
    330,897.04x = 162,031,349,895.97
  5. Step 5: Solve for x
    x = 162,031,349,895.97/330,897.04
  6. Step 6: Final answer
    x = 489,673.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.