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Finding the Fourth Proportional to 553,733.40, 830,988.90 and 238,416.60

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Solution

The fourth proportional to 553,733.40, 830,988.90 and 238,416.60 is: 357,792.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,733.40 : 830,988.90 = 238,416.60 : x
  2. Step 2: Convert to fraction form
    553,733.40/830,988.90 = 238,416.60/x
  3. Step 3: Cross multiply
    553,733.40x = 830,988.90 × 238,416.60
  4. Step 4: Simplify right side
    553,733.40x = 198,121,548,175.74
  5. Step 5: Solve for x
    x = 198,121,548,175.74/553,733.40
  6. Step 6: Final answer
    x = 357,792.30

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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.