Home / 420,736,937.20-630,806,807.40-161,852,124.40

Finding the Fourth Proportional to 420,736,937.20, 630,806,807.40 and 161,852,124.40

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Solution

The fourth proportional to 420,736,937.20, 630,806,807.40 and 161,852,124.40 is: 242,663,319.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,736,937.20 : 630,806,807.40 = 161,852,124.40 : x
  2. Step 2: Convert to fraction form
    420,736,937.20/630,806,807.40 = 161,852,124.40/x
  3. Step 3: Cross multiply
    420,736,937.20x = 630,806,807.40 × 161,852,124.40
  4. Step 4: Simplify right side
    420,736,937.20x = 102,097,421,863,671,648
  5. Step 5: Solve for x
    x = 102,097,421,863,671,648/420,736,937.20
  6. Step 6: Final answer
    x = 242,663,319.61

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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.