Home / 386,688,005.20-580,032,007.80-223,205,381.20

Finding the Fourth Proportional to 386,688,005.20, 580,032,007.80 and 223,205,381.20

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Solution

The fourth proportional to 386,688,005.20, 580,032,007.80 and 223,205,381.20 is: 334,808,071.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,688,005.20 : 580,032,007.80 = 223,205,381.20 : x
  2. Step 2: Convert to fraction form
    386,688,005.20/580,032,007.80 = 223,205,381.20/x
  3. Step 3: Cross multiply
    386,688,005.20x = 580,032,007.80 × 223,205,381.20
  4. Step 4: Simplify right side
    386,688,005.20x = 129,466,265,409,200,352
  5. Step 5: Solve for x
    x = 129,466,265,409,200,352/386,688,005.20
  6. Step 6: Final answer
    x = 334,808,071.80

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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.