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Finding the Fourth Proportional to 340,088.10, 510,132.15 and 103,430.40

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Solution

The fourth proportional to 340,088.10, 510,132.15 and 103,430.40 is: 155,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,088.10 : 510,132.15 = 103,430.40 : x
  2. Step 2: Convert to fraction form
    340,088.10/510,132.15 = 103,430.40/x
  3. Step 3: Cross multiply
    340,088.10x = 510,132.15 × 103,430.40
  4. Step 4: Simplify right side
    340,088.10x = 52,763,172,327.36
  5. Step 5: Solve for x
    x = 52,763,172,327.36/340,088.10
  6. Step 6: Final answer
    x = 155,145.60

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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.