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Finding the Fourth Proportional to 403,237.40, 604,856.10 and 328,587.80

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Solution

The fourth proportional to 403,237.40, 604,856.10 and 328,587.80 is: 492,881.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,237.40 : 604,856.10 = 328,587.80 : x
  2. Step 2: Convert to fraction form
    403,237.40/604,856.10 = 328,587.80/x
  3. Step 3: Cross multiply
    403,237.40x = 604,856.10 × 328,587.80
  4. Step 4: Simplify right side
    403,237.40x = 198,748,335,215.58
  5. Step 5: Solve for x
    x = 198,748,335,215.58/403,237.40
  6. Step 6: Final answer
    x = 492,881.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.