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Finding the Fourth Proportional to 289,692,402.40, 434,538,603.60 and 136,637,394.40

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Solution

The fourth proportional to 289,692,402.40, 434,538,603.60 and 136,637,394.40 is: 204,956,091.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,692,402.40 : 434,538,603.60 = 136,637,394.40 : x
  2. Step 2: Convert to fraction form
    289,692,402.40/434,538,603.60 = 136,637,394.40/x
  3. Step 3: Cross multiply
    289,692,402.40x = 434,538,603.60 × 136,637,394.40
  4. Step 4: Simplify right side
    289,692,402.40x = 59,374,222,562,118,464
  5. Step 5: Solve for x
    x = 59,374,222,562,118,464/289,692,402.40
  6. Step 6: Final answer
    x = 204,956,091.60

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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.