Home / 394,041,811.86-543,780,159.57-215,426,085.03

Finding the Fourth Proportional to 394,041,811.86, 543,780,159.57 and 215,426,085.03

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Solution

The fourth proportional to 394,041,811.86, 543,780,159.57 and 215,426,085.03 is: 297,289,341.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,041,811.86 : 543,780,159.57 = 215,426,085.03 : x
  2. Step 2: Convert to fraction form
    394,041,811.86/543,780,159.57 = 215,426,085.03/x
  3. Step 3: Cross multiply
    394,041,811.86x = 543,780,159.57 × 215,426,085.03
  4. Step 4: Simplify right side
    394,041,811.86x = 117,144,430,893,153,808
  5. Step 5: Solve for x
    x = 117,144,430,893,153,808/394,041,811.86
  6. Step 6: Final answer
    x = 297,289,341.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.