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Finding the Fourth Proportional to 489,887,985.60, 734,831,978.40 and 183,140,240.40

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Solution

The fourth proportional to 489,887,985.60, 734,831,978.40 and 183,140,240.40 is: 274,710,360.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,887,985.60 : 734,831,978.40 = 183,140,240.40 : x
  2. Step 2: Convert to fraction form
    489,887,985.60/734,831,978.40 = 183,140,240.40/x
  3. Step 3: Cross multiply
    489,887,985.60x = 734,831,978.40 × 183,140,240.40
  4. Step 4: Simplify right side
    489,887,985.60x = 134,577,305,177,783,600
  5. Step 5: Solve for x
    x = 134,577,305,177,783,600/489,887,985.60
  6. Step 6: Final answer
    x = 274,710,360.60

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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.