Home / 211,019,920.84-316,117,850.40-145,429,341.40

Finding the Fourth Proportional to 211,019,920.84, 316,117,850.40 and 145,429,341.40

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Solution

The fourth proportional to 211,019,920.84, 316,117,850.40 and 145,429,341.40 is: 217,860,051.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,019,920.84 : 316,117,850.40 = 145,429,341.40 : x
  2. Step 2: Convert to fraction form
    211,019,920.84/316,117,850.40 = 145,429,341.40/x
  3. Step 3: Cross multiply
    211,019,920.84x = 316,117,850.40 × 145,429,341.40
  4. Step 4: Simplify right side
    211,019,920.84x = 45,972,810,788,455,728
  5. Step 5: Solve for x
    x = 45,972,810,788,455,728/211,019,920.84
  6. Step 6: Final answer
    x = 217,860,051.34

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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.