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Finding the Fourth Proportional to 506,129.40, 759,485.70 and 190,812.60

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Solution

The fourth proportional to 506,129.40, 759,485.70 and 190,812.60 is: 286,328.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,129.40 : 759,485.70 = 190,812.60 : x
  2. Step 2: Convert to fraction form
    506,129.40/759,485.70 = 190,812.60/x
  3. Step 3: Cross multiply
    506,129.40x = 759,485.70 × 190,812.60
  4. Step 4: Simplify right side
    506,129.40x = 144,919,441,079.82
  5. Step 5: Solve for x
    x = 144,919,441,079.82/506,129.40
  6. Step 6: Final answer
    x = 286,328.83

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1.5x scale

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.