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Finding the Fourth Proportional to 346,328.60, 519,509.10 and 109,689.80

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Solution

The fourth proportional to 346,328.60, 519,509.10 and 109,689.80 is: 164,539.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,328.60 : 519,509.10 = 109,689.80 : x
  2. Step 2: Convert to fraction form
    346,328.60/519,509.10 = 109,689.80/x
  3. Step 3: Cross multiply
    346,328.60x = 519,509.10 × 109,689.80
  4. Step 4: Simplify right side
    346,328.60x = 56,984,849,277.18
  5. Step 5: Solve for x
    x = 56,984,849,277.18/346,328.60
  6. Step 6: Final answer
    x = 164,539.83

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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.