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Finding the Fourth Proportional to 352,274,428.40, 528,411,642.60 and 260,441,423.60

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Solution

The fourth proportional to 352,274,428.40, 528,411,642.60 and 260,441,423.60 is: 390,662,135.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,274,428.40 : 528,411,642.60 = 260,441,423.60 : x
  2. Step 2: Convert to fraction form
    352,274,428.40/528,411,642.60 = 260,441,423.60/x
  3. Step 3: Cross multiply
    352,274,428.40x = 528,411,642.60 × 260,441,423.60
  4. Step 4: Simplify right side
    352,274,428.40x = 137,620,280,445,558,416
  5. Step 5: Solve for x
    x = 137,620,280,445,558,416/352,274,428.40
  6. Step 6: Final answer
    x = 390,662,135.40

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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.