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Finding the Fourth Proportional to 358,070.86, 537,120.87 and 147,688.75

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Solution

The fourth proportional to 358,070.86, 537,120.87 and 147,688.75 is: 221,539.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,070.86 : 537,120.87 = 147,688.75 : x
  2. Step 2: Convert to fraction form
    358,070.86/537,120.87 = 147,688.75/x
  3. Step 3: Cross multiply
    358,070.86x = 537,120.87 × 147,688.75
  4. Step 4: Simplify right side
    358,070.86x = 79,326,709,889.21
  5. Step 5: Solve for x
    x = 79,326,709,889.21/358,070.86
  6. Step 6: Final answer
    x = 221,539.14

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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.