Home / 289,683,445.70-434,525,168.55-257,938,703.30

Finding the Fourth Proportional to 289,683,445.70, 434,525,168.55 and 257,938,703.30

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Solution

The fourth proportional to 289,683,445.70, 434,525,168.55 and 257,938,703.30 is: 386,908,054.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,683,445.70 : 434,525,168.55 = 257,938,703.30 : x
  2. Step 2: Convert to fraction form
    289,683,445.70/434,525,168.55 = 257,938,703.30/x
  3. Step 3: Cross multiply
    289,683,445.70x = 434,525,168.55 × 257,938,703.30
  4. Step 4: Simplify right side
    289,683,445.70x = 112,080,858,527,000,944
  5. Step 5: Solve for x
    x = 112,080,858,527,000,944/289,683,445.70
  6. Step 6: Final answer
    x = 386,908,054.95

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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.