Finding the Fourth Proportional to 260,497,444.46, 390,663,202.16 and 85,579,876.58
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Solution
The fourth proportional to 260,497,444.46, 390,663,202.16 and 85,579,876.58 is: 128,342,558.96
Step by Step Solution
- Step 1: Write the proportion equation
260,497,444.46 : 390,663,202.16 = 85,579,876.58 : x - Step 2: Convert to fraction form
260,497,444.46/390,663,202.16 = 85,579,876.58/x - Step 3: Cross multiply
260,497,444.46x = 390,663,202.16 × 85,579,876.58 - Step 4: Simplify right side
260,497,444.46x = 33,432,908,623,461,028 - Step 5: Solve for x
x = 33,432,908,623,461,028/260,497,444.46 - Step 6: Final answer
x = 128,342,558.96
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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.