Home / 256,243,409.72-384,430,658.96-74,490,587.72

Finding the Fourth Proportional to 256,243,409.72, 384,430,658.96 and 74,490,587.72

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Solution

The fourth proportional to 256,243,409.72, 384,430,658.96 and 74,490,587.72 is: 111,754,935.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,243,409.72 : 384,430,658.96 = 74,490,587.72 : x
  2. Step 2: Convert to fraction form
    256,243,409.72/384,430,658.96 = 74,490,587.72/x
  3. Step 3: Cross multiply
    256,243,409.72x = 384,430,658.96 × 74,490,587.72
  4. Step 4: Simplify right side
    256,243,409.72x = 28,636,465,721,781,356
  5. Step 5: Solve for x
    x = 28,636,465,721,781,356/256,243,409.72
  6. Step 6: Final answer
    x = 111,754,935.49

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1.5x scale

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.