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Finding the Fourth Proportional to 346,710.40, 520,065.60 and 197,411.20

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Solution

The fourth proportional to 346,710.40, 520,065.60 and 197,411.20 is: 296,116.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,710.40 : 520,065.60 = 197,411.20 : x
  2. Step 2: Convert to fraction form
    346,710.40/520,065.60 = 197,411.20/x
  3. Step 3: Cross multiply
    346,710.40x = 520,065.60 × 197,411.20
  4. Step 4: Simplify right side
    346,710.40x = 102,666,774,174.72
  5. Step 5: Solve for x
    x = 102,666,774,174.72/346,710.40
  6. Step 6: Final answer
    x = 296,116.80

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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.