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Finding the Fourth Proportional to 357,553,269.80, 536,329,904.70 and 212,434,447.40

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Solution

The fourth proportional to 357,553,269.80, 536,329,904.70 and 212,434,447.40 is: 318,651,671.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,553,269.80 : 536,329,904.70 = 212,434,447.40 : x
  2. Step 2: Convert to fraction form
    357,553,269.80/536,329,904.70 = 212,434,447.40/x
  3. Step 3: Cross multiply
    357,553,269.80x = 536,329,904.70 × 212,434,447.40
  4. Step 4: Simplify right side
    357,553,269.80x = 113,934,946,929,039,168
  5. Step 5: Solve for x
    x = 113,934,946,929,039,168/357,553,269.80
  6. Step 6: Final answer
    x = 318,651,671.10

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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.