Home / 289,615,551.60-434,423,327.40-257,870,809.20

Finding the Fourth Proportional to 289,615,551.60, 434,423,327.40 and 257,870,809.20

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Solution

The fourth proportional to 289,615,551.60, 434,423,327.40 and 257,870,809.20 is: 386,806,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,615,551.60 : 434,423,327.40 = 257,870,809.20 : x
  2. Step 2: Convert to fraction form
    289,615,551.60/434,423,327.40 = 257,870,809.20/x
  3. Step 3: Cross multiply
    289,615,551.60x = 434,423,327.40 × 257,870,809.20
  4. Step 4: Simplify right side
    289,615,551.60x = 112,025,094,971,994,528
  5. Step 5: Solve for x
    x = 112,025,094,971,994,528/289,615,551.60
  6. Step 6: Final answer
    x = 386,806,213.80

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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.