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Finding the Fourth Proportional to 525,820.40, 788,730.60 and 146,740.40

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Solution

The fourth proportional to 525,820.40, 788,730.60 and 146,740.40 is: 220,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,820.40 : 788,730.60 = 146,740.40 : x
  2. Step 2: Convert to fraction form
    525,820.40/788,730.60 = 146,740.40/x
  3. Step 3: Cross multiply
    525,820.40x = 788,730.60 × 146,740.40
  4. Step 4: Simplify right side
    525,820.40x = 115,738,643,736.24
  5. Step 5: Solve for x
    x = 115,738,643,736.24/525,820.40
  6. Step 6: Final answer
    x = 220,110.60

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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.