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Finding the Fourth Proportional to 30,333,967.40, 45,500,951.10 and 20,130,300.20

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Solution

The fourth proportional to 30,333,967.40, 45,500,951.10 and 20,130,300.20 is: 30,195,450.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,333,967.40 : 45,500,951.10 = 20,130,300.20 : x
  2. Step 2: Convert to fraction form
    30,333,967.40/45,500,951.10 = 20,130,300.20/x
  3. Step 3: Cross multiply
    30,333,967.40x = 45,500,951.10 × 20,130,300.20
  4. Step 4: Simplify right side
    30,333,967.40x = 915,947,805,028,520.25
  5. Step 5: Solve for x
    x = 915,947,805,028,520.25/30,333,967.40
  6. Step 6: Final answer
    x = 30,195,450.30

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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.